Aditya Stainless stands out as a top manufacturer and supplier of Stainless Steel 321H Nuts, proudly based in Kolkata, India. Designed to handle high temperatures, these nuts are crafted from a titanium-stabilized austenitic stainless steel alloy that boasts a higher carbon content, ensuring exceptional strength and resistance to oxidation and intergranular corrosion. Our SS 321H nuts are trusted in demanding environments like thermal processing, chemical plants, and power generation. We adhere to international standards such as ASTM A194 and ASTM A193, offering these nuts in a variety of sizes, grades, and thread types to guarantee outstanding mechanical performance and precise dimensions.
Stainless Steel 321H Nuts are composed of chromium (17–19%), nickel (9–12%), and titanium (at least five times the carbon content) to stabilize the alloy and prevent carbide precipitation. The increased carbon content boosts creep strength at high temperatures. These nuts deliver a tensile strength ranging from 515 to 620 MPa, a yield strength of about 205 MPa, and an elongation of roughly 35%. The alloy is known for its excellent thermal stability, oxidation resistance, and mechanical durability, making it a great choice for welded structures that face continuous high-temperature conditions.
| Specifications Of | 321H Stainless Steel Nuts |
|---|---|
| Length Sizes | 3 millimeter to 200 millimeter |
| Head Type | Hex, Square |
| Head Style | Hex, Square |
| Standard | ASME B18.2.2 ASME B16.5 ASME B18.5 ANSI B 18.2.4 2M DIN = DIN 931, DIN 933, DIN 934, DIN 970 ISO = ISO 4033, ISO 4032, JIS UTS = UNF, NPTF, NPT, UNC, UNEF, UNS |
| Surface Coating | Hot Dipped Galvanizing Coated Nuts Phosphate Coated Nuts Zinc Coated Nuts Cadmium Coated Nuts Teflon Coated Nuts Xylon Coated Nuts |
| Type Of Nuts | Coupling Nuts, Serrated Flange Locknuts, Square Nuts, Heavy Hex Nuts, Flange Nuts |
Grade | Mn | N | P | C | S | Cr | Mo | Si | Ni | Other | |
Stainless Steel 321H Nuts | minimum maximum | 2.00 | – | 0.045 | 0.04 0.10 | 0.030 | 17.0 19.0 | – | 0.75 | 9.0 12.0 | Ti=4(C+N) 0.70 |
Grade | Tensile Strength (MPa) minimum | Yield Strength 0.2% Proof (MPa) minimum | Elongation (% in 50mm) minimum | Hardness | |
Rockwell B (HR B) maximum | Brinell (HB) maximum | ||||
321H Stainless Steel Fasteners | 515 | 205 | 40 | 95 | 217 |
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Corrosion-resistant product ideal for high-temperature applications. Stainless Steel 321H Nuts are available in sizes from M6 to M36, designed for use in aerospace and chemical processing environments, offering excellent heat and oxidation resistance.
Stainless Steel 321H Coupling Nuts are used to connect threaded rods in high-temperature settings. Sizes range from M6 to M36, suitable for applications in chemical processing and aerospace where heat resistance and durability are essential.
Stainless Steel 321H Nylon Insert Nuts feature a nylon insert to prevent loosening under high temperatures. Available in sizes from M6 to M24, they are ideal for applications in industrial machinery and exhaust systems where stability and heat resistance are crucial.
Stainless Steel 321H Flange Hex Nuts provide enhanced load distribution with their integrated flanges. Sizes range from M6 to M24, making them suitable for high-temperature environments like chemical processing and aerospace, offering both strength and corrosion resistance.
Stainless Steel 321H Heavy Hex Nuts are designed for high-stress and high-temperature applications. Available in sizes from M6 to M36, they are used in industrial machinery and aerospace components, providing exceptional strength and heat resistance.
Stainless Steel 321H Square Nuts offer a large surface area for effective torque application. Sizes range from M6 to M24, suitable for high-temperature and industrial applications, ensuring durability and stability in demanding environments.
We ensure complete documentation for our Stainless Steel 321H Nuts, which means transparency and reliability. Our documents include a commercial invoice, a packaging list, a fumigation certificate, a heat treatment chart, and a quality assurance plan. The package also includes an NABL-approved lab test report, confirming strict standards. Further, quality is demonstrated through many test certificates in the form of MTC according to EN 10204/3.1b, PMI Test Certificate, 100% radiography test report, and a third-party inspection certificate. These guarantee 100% client satisfaction along with confidence for the integrity of our products.
Stainless Steel 321H Nuts excel in high-temperature and corrosive environments, making them a go-to choice in industries like petrochemical, refinery, aerospace, thermal processing, and power generation. Their stabilized structure helps them resist intergranular corrosion post-welding, which is why they’re perfect for heat exchangers, boiler systems, manifolds, and exhaust systems. They’re also used in superheater tubes, chemical reactors, and pressure vessels where resistance to elevated temperatures and mechanical integrity are crucial. With their impressive strength and oxidation resistance, they’re ideal for fastener assemblies in extreme conditions that demand longevity and reliability.
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